An ANN model is proposed to predict the impurity concentration in solid diffusion process when th... more An ANN model is proposed to predict the impurity concentration in solid diffusion process when the diffusion coefficient is not known using back-propagation learning technique based on insufficient data for analytical solution. The proposed model was very ...
Energy Sources, Part B: Economics, Planning, and Policy, 2010
The energy sector in Jordan depends heavily on imported oil and gas products and as a result, thi... more The energy sector in Jordan depends heavily on imported oil and gas products and as a result, this energy policy put the country in tough economic situations and slowed down industrial growth in the last 15 years. This situation is worsened by the dramatic increase in crude oil prices worldwide and the increased demand on energy consumption. Therefore, it became
Aging of aircraft structures is mostly associated with fatigue cracking, de-bonding and corrosion... more Aging of aircraft structures is mostly associated with fatigue cracking, de-bonding and corrosion. Detection and characterization of the structural defects at the initiation stages makes it a great challenge for any inspection technology. This study proposes a new solution for the nondestructive evaluation problem by using a magnetic flux method for non-ferromagnetic materials and provides a new neural network tool that predicts crack profiles in three dimensions by solving the inverse problem, where available neural networks can solve it in two dimensions only. The discontinuity resulting from a crack produces disturbance to the distribution of electrical current density in the structure and as a result the magnetic field around the crack will change. The magnitude of the disturbance is determined by the size and shape of the crack. Therefore, it is possible to evaluate the crack area by magnetic field measurements. The magnetic fields from the plate edges and the wires that carry the current are very strong compared to the magnetic field produced by the crack. A new plate, called a dummy plate, is used to minimize the effect of the magnetic fields produced by the plate edges. This study proves the effectiveness of the dummy plate and shows the measurable change in the magnetic signal around the crack. As a result of this work, a tool is now available that can solve the nondestructive evaluation problem and the inverse problem in three dimensions and has the capability to provide an enhanced assessment tool for judgment and decision-making which will improve the safety of metallic structures and save people lives.
The aim of this work is to compare the extra added cost of different new water distillation techn... more The aim of this work is to compare the extra added cost of different new water distillation techniques to the cost of extra collected distilled water. The comparison is between; a traditional single slope solar still, a solar still with installed reflecting mirror, a solar still with replacing the flat water with step wise basin, a solar still with a single axis sun tracking system and a solar still with sun tracking system and replacing the flat water basin with step wise basin. It was found that all cases of modifications have an economical effect except one which is the system with sun tracking. The most feasible system is the step wise design, which gave the shortest pay back period of 2.1 years, followed by the system with sun tracking and step wise, which gave the payback period of 3.6 years, followed by the system with reflecting mirrors, which gave the payback period of 4.6 years.
In this work, the effect of two axes tracking on a solar cooking system was studied. A dish was b... more In this work, the effect of two axes tracking on a solar cooking system was studied. A dish was built to concentrate solar radiation on a pan that is fixed at the focus of the dish. The dish tracks the sun using a two axes sun tracking system. This system was built and tested. Experimental results obtained show that the temperature inside the pan reached more than 93°C in a day where the maximum ambient temperature was 32°C. This temperature is suitable for cooking purposes and this was achieved by using the two axes sun tracking system.
This paper presents a brief overview of the overlap between the mechanical and civil engineering ... more This paper presents a brief overview of the overlap between the mechanical and civil engineering professions. It discusses common undergraduate courses in their curricula. It illustrates with examples the practical applications of these courses in both fields of engineering. The paper explains the importance of understanding this commonality by the involved instructors. It also outlines the roles required from the instructors and the university in this regard.
This paper is a follow up to a previous paper on the overlap between civil and mechanical enginee... more This paper is a follow up to a previous paper on the overlap between civil and mechanical engineering fields. A very brief introduction on the overlap among various engineering fields is given followed by a short description of the common areas between the two specific branches of civil and mechanical engineering. The significance of this topic to the engineering education is outlined. The overlap between these two specific branches of engineering is larger and more conspicuous at the graduate level than the undergraduate programs. The focus of this paper is on the common graduate courses between the two fields. It gives some details on these common graduate courses. This is illustrated by practical examples from both engineering fields. Some recommendations based on the authors' experiences and opinions are provided at the conclusion of this paper.
Civil and mechanical engineering share the areas of solid and fluid mechanics. Many undergraduate... more Civil and mechanical engineering share the areas of solid and fluid mechanics. Many undergraduate and graduate courses belong to these two vast educational areas.
An ANN model is proposed to predict the impurity concentration in solid diffusion process when th... more An ANN model is proposed to predict the impurity concentration in solid diffusion process when the diffusion coefficient is not known using back-propagation learning technique based on insufficient data for analytical solution. The proposed model was very ...
Energy Sources, Part B: Economics, Planning, and Policy, 2010
The energy sector in Jordan depends heavily on imported oil and gas products and as a result, thi... more The energy sector in Jordan depends heavily on imported oil and gas products and as a result, this energy policy put the country in tough economic situations and slowed down industrial growth in the last 15 years. This situation is worsened by the dramatic increase in crude oil prices worldwide and the increased demand on energy consumption. Therefore, it became
Aging of aircraft structures is mostly associated with fatigue cracking, de-bonding and corrosion... more Aging of aircraft structures is mostly associated with fatigue cracking, de-bonding and corrosion. Detection and characterization of the structural defects at the initiation stages makes it a great challenge for any inspection technology. This study proposes a new solution for the nondestructive evaluation problem by using a magnetic flux method for non-ferromagnetic materials and provides a new neural network tool that predicts crack profiles in three dimensions by solving the inverse problem, where available neural networks can solve it in two dimensions only. The discontinuity resulting from a crack produces disturbance to the distribution of electrical current density in the structure and as a result the magnetic field around the crack will change. The magnitude of the disturbance is determined by the size and shape of the crack. Therefore, it is possible to evaluate the crack area by magnetic field measurements. The magnetic fields from the plate edges and the wires that carry the current are very strong compared to the magnetic field produced by the crack. A new plate, called a dummy plate, is used to minimize the effect of the magnetic fields produced by the plate edges. This study proves the effectiveness of the dummy plate and shows the measurable change in the magnetic signal around the crack. As a result of this work, a tool is now available that can solve the nondestructive evaluation problem and the inverse problem in three dimensions and has the capability to provide an enhanced assessment tool for judgment and decision-making which will improve the safety of metallic structures and save people lives.
The aim of this work is to compare the extra added cost of different new water distillation techn... more The aim of this work is to compare the extra added cost of different new water distillation techniques to the cost of extra collected distilled water. The comparison is between; a traditional single slope solar still, a solar still with installed reflecting mirror, a solar still with replacing the flat water with step wise basin, a solar still with a single axis sun tracking system and a solar still with sun tracking system and replacing the flat water basin with step wise basin. It was found that all cases of modifications have an economical effect except one which is the system with sun tracking. The most feasible system is the step wise design, which gave the shortest pay back period of 2.1 years, followed by the system with sun tracking and step wise, which gave the payback period of 3.6 years, followed by the system with reflecting mirrors, which gave the payback period of 4.6 years.
In this work, the effect of two axes tracking on a solar cooking system was studied. A dish was b... more In this work, the effect of two axes tracking on a solar cooking system was studied. A dish was built to concentrate solar radiation on a pan that is fixed at the focus of the dish. The dish tracks the sun using a two axes sun tracking system. This system was built and tested. Experimental results obtained show that the temperature inside the pan reached more than 93°C in a day where the maximum ambient temperature was 32°C. This temperature is suitable for cooking purposes and this was achieved by using the two axes sun tracking system.
This paper presents a brief overview of the overlap between the mechanical and civil engineering ... more This paper presents a brief overview of the overlap between the mechanical and civil engineering professions. It discusses common undergraduate courses in their curricula. It illustrates with examples the practical applications of these courses in both fields of engineering. The paper explains the importance of understanding this commonality by the involved instructors. It also outlines the roles required from the instructors and the university in this regard.
This paper is a follow up to a previous paper on the overlap between civil and mechanical enginee... more This paper is a follow up to a previous paper on the overlap between civil and mechanical engineering fields. A very brief introduction on the overlap among various engineering fields is given followed by a short description of the common areas between the two specific branches of civil and mechanical engineering. The significance of this topic to the engineering education is outlined. The overlap between these two specific branches of engineering is larger and more conspicuous at the graduate level than the undergraduate programs. The focus of this paper is on the common graduate courses between the two fields. It gives some details on these common graduate courses. This is illustrated by practical examples from both engineering fields. Some recommendations based on the authors' experiences and opinions are provided at the conclusion of this paper.
Civil and mechanical engineering share the areas of solid and fluid mechanics. Many undergraduate... more Civil and mechanical engineering share the areas of solid and fluid mechanics. Many undergraduate and graduate courses belong to these two vast educational areas.
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